text: regex_integer_in_range = r"^[1-9][\d]{5}$"	# Do not delete 'r'.
  regex_alternating_repetitive_digit_pair = r"(\d)(?=\d\1)"	# Do not delete 'r'.
  
  
  import re
  P = [
  		'110000'		# False
  		,'111456'		# True
  		,'abcdef'		# False
  		,'101201'		# True
  	]
  for item in P:
  	print(re.match(regex_integer_in_range, item))
  	print(re.findall(regex_alternating_repetitive_digit_pair, item))
  	print (bool(re.match(regex_integer_in_range, item)) 
  	and len(re.findall(regex_alternating_repetitive_digit_pair, item)) < 2)